Ore-crushing- machine



S. F. HODGE.

Ore Stamp.

Patented May 26, 1857.

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UNITED STATES PATENT OFFICE.

SAML. F. HODGE, OF DETROIT, MICHIGAN.

ORE-CRUSHING MACHINE.

Specification of Letters Patent No. 17,374, dated May 26, 1857.

To all whom it may concern:

Be it known that I,'SAML. F. Honor, of Detroit, in the county of Wayneand State of Michigan, have invented certain new and useful Improvementsin Ore-Crushing Machines; and I hereby declare that the following is afull, clear, and exact description thereof, reference being had to theaccompanying drawing, in which- Figures 1, 3 and 4 represent elevationand Fig. 2, a plan view of my improved orecrusher.

Stamping mills are generally used for breaking the hard refractorypieces or ore, which resist the action of rollers of the crushing andchat mills. In some establishments where the ore is very hard such ascertain copper and Zinc ore, stamping mills are used exclusively. Theseconsist of a number of upright wooden beams called stampers, to thelower extremities of which are attached pieces of cast iron varying inweight. These are placed in a Wooden frame, and alternately lifted upabout 10 inches by the cogs or wipers of a horizontal axle which ismoved around either by a master wheel or a steam engine. This mode ofelevating the stampers prevents serious inconveniences. 1. Resistancedue to the sliding friction of the cams against the studs of the beamswhich absorbs a considerable amount of the motive power transmitted. 2.Necessarily short stroke of the stampers and their consequentinefficiency it being impossible to increase the length of the strokebeyond a certain limit.

The annexed drawing shows a new system of elevating weights, applicableto trip hammers, stampers or any other similar implement which areoperated by lifting and falling alternately on any substance to becrushed, compressed or broken. It consists of two grooved rollers (A)and (B) grasp? ing with a gentle pressure an upright and rigid rod towhich the stamper or hammer is attached. The rollers are fixed ontoaxles which are both placed in a horizontal line in relation to thevertical axis line of the elevating rod (C) so that the pressure on therod shall always be in one line normal to one point of the rod. Theroller (A) or the guiding roller, may be of any convenient .diameter andmove freely with the rod C.

It is obvious that rollers can be arranged for one or more strokes toeach revolution, by removing one or more disk segments from theperiphery of the roller. I do not wish to confine myself to theparticular shape of the rod or of the groove of the roller as shown inthe annexed drawing. Bars of a circular, square or polygonal sectionwill answer the purpose equally well, when grasped by similarly groovedrollers. Neither do I confine myself to any kind of material in theconstruction of the beam or rod, or the rollers, as this is a matter ofconvenience governed by circumstances and economy.

What I claim as my invention and desire to secure by Letters Patent is:

The alternate lifting and dropping of a scribing witnesses.

SAML. F. HODGE. Witnesses:

H. G. STORY, THos. S. CHRISTIE.

